TWI374053B - - Google Patents

Description

1374053 VI. Description of the Invention: [Technical Field of the Invention] The present invention relates to a south molecular dispersing agent for inorganic pigments, a dispersion method using a pot, and a dip composition. [Prior Art] As a dispersing agent used for the basic inorganic pigment, Patent Document 1 mentions a dispersing agent of a poly-acidification type and a poly-cis-succinic acid type. However, the specific structure is not disclosed in this document. Further, as a non-aqueous ceramic molding binder, a copolymer containing a specific ratio of (meth) acrylate and a (meth) acrylate having a polyoxyethylene chain (Patent Document 2) and a ceramic have been disclosed. I A copolymer of a polyoxyalkylene derivative and maleic acid for use in a slurry composition for production (Patent Document 3). Further, in Patent Documents 4 to 6, a copolymer containing a structural unit derived from a macromonomer is disclosed as a dispersing agent for a non-aqueous pigment. [Patent Document 1] Japanese Patent Laid-Open No. 2001-114569 [Patent Document 2] Japanese Patent Laid-Open Publication No. Hei 6-72759 [Request Item 1] [Patent Document 3] Japanese Patent Laid-Open No. 2 Japanese Patent Application Laid-Open No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. 1. [Abstract] [Patent Document 6] Japanese Patent Laid-Open Publication No. Hei 2-7-7775 No. 6 [Request 142778.doc 1374053 1 , Abstract] [Summary of the Invention] [Problems to be Solved by the Invention] However, in the field of precision ceramics In the field of the field, it is attempting to achieve miniaturization, high speed, low power consumption, high efficiency, and high capacity by controlling the nano-scale fine structure, and the nano-dispersion technology for non-aqueous alkaline inorganic pigments. The requirements are also higher, and further improvements in the performance of the dispersant are sought. The present invention relates to a polymer dispersant for inorganic pigments, a dispersion method using the same, and a slurry composition. [Technical means for solving the problem] The present invention relates to a polymer dispersing agent for inorganic pigments which comprises a copolymer which is contained in all structural units in an amount of 5 to 45% by weight of the structural unit (4). In the structural unit, the structural unit is 50 to 90 and 4%, and the weight ratio (structural unit (4)/structure single ()) relative to the structural unit (8) is 0'05 to 〇7 structural unit (4), and The structural unit (4) is a sister-〇, 、, represented by the general formula (1). Structure 7G 'Structure 7G(b) is a structure represented by the formula (2-1), β, + β β or a polymer derived from a repeating unit represented by the formula (2-2) The primary key shouts the structural unit of the giant early body with an ethylenically unsaturated double bond at the end, ^^ sister. . , "α-structure early (c) is a structure represented by the general formula (3). Unit: [Chemical 1]

U) 142778.doc 1374053 [In the above formula (1), R1, R2 and R3 are the same or different and each represents a hydrogen atom or an alkyl group having a carbon number of 1 to 2, and Μ represents a hydrogen atom or a cation]; ]

[In the above formula (2-υ, R4, R5&amp; R0 are the same or different, and represent a hydrogen atom or an alkyl group having a carbon number of 1 to 2, and R7 represents a straight or branched chain having a carbon number of 丨~4. a base, R8 represents a hydrogen atom or a carbon number of 2, X» represents an oxygen atom or NH, Μ represents a hydrogen atom or a cation, and n丨 represents a number of 〇5〇; in the above formula (2-2) R9, Rl〇, R11, Rl3, Rl4 and Rl5 are the same or different and represent a hydrogen atom or an alkyl group having a carbon number of 1 to 2, and R12 represents an alkyl group having no alcoholic hydroxyl group and having a carbon number of fluorene, and R16 represents The alcoholic hydroxyl group has a carbon number of 14 and a positive number and indicates the molar fraction of the repeating unit [Chemical 3] ' | 十财ΧΊ «21(3) [R, R18 and in the above formula (3) R19 is the same or different and represents hydrogen atom 142778.doc 1374053 or an alkyl group having a carbon number of 1 to 2, and χ3 represents an oxygen atom or NH, R2〇 and 尺2, and represents an alkyl group or an alkenyl group having a carbon number of 1 to 30. Or an aryl group. The present invention relates to a dispersion method comprising dispersing an inorganic pigment in a non-aqueous solvent using a polymer dispersant for an inorganic pigment of the present invention. Further, the difference (Δ3ρ) between the solubility parameter of the nonaqueous solvent and the monomer of the structural unit (c) derived from the polymer dispersant for the inorganic pigment is 2 〇 (MPay/2 or more). In another aspect, the present invention relates to a non-aqueous solvent, a basic inorganic pigment, and a molecular dispersing agent for an inorganic pigment of the present invention. [Effects of the Invention] The inorganic substance of the present invention The polymer polymer dispersant for pigment can be used, for example, to finely disperse the alkaline helmet pigment in a nonaqueous solvent, and it is preferred to improve the microdispersibility of the inorganic pigment in the nonaqueous solvent. The invention is based on the insight that the structure is represented by the structure represented by the formula (1), the structural unit represented by the formula (IV), or the polymerization unit containing the repeating unit represented by the formula (2-2). a structural unit of a macromonomer having a single terminal at the single end of the main chain and having an ethylenically unsaturated double bond, that is, a structural unit, and a copolymer represented by the formula (3): Exist in the proportion of special , Zhuang + a This achieves good micro-dispersibility of basic inorganic pigments in non-aqueous solvents <I j is the dispersion of basic inorganic pigments into: - the state of human particle size or close to it" in non-aqueous solvents The details of the micro-dispersibility of the inorganic pigments, such as the mechanism of the micro-dispersion, are unknown. I42778.doc 1374053 can be presumed as follows. First, the structure of the polymer dispersant (copolymer) is strongly adsorbed to the inorganic pigments early and strongly. The surface thus inhibits the surface detachment of the polymer dispersant from the self-initiating inorganic pigment. Further, the structural unit (4) in the polymer dispersant is mainly inhibited from re-dissolving in the non-aqueous solvent. Therefore, the polymer dispersant can be coated with the inorganic pigment. surface. Further, since the structural unit (8) in the polymer dispersant of the coating layer (adsorption layer) mainly brings a strong steric repulsion between the inorganic pigment particles, the result is that the inorganic pigment particles are agglomerated with each other, and thus the dispersion is finely dispersed. Sexual improvement. However, the above is presumed, and the present invention is not limited to the mechanisms. That is, the present invention relates to a polymer component for an inorganic pigment (hereinafter also referred to as a polymer dispersant of the present invention), which comprises a copolymerized copolymer in which the copolymer is contained in all structural units of 5, The weight % of the structure is earlier than (4), the structural unit U of 50 to 9 % by weight in all structural units and the weight ratio (structure unit (4) / structure single two (8)) relative to the structure early 1 (b) is 0. 05 ～7 7 structural unit (4), and the structural unit (4) is a structural unit represented by the general formula (1), and the last name β is 70 (b) is expressed by the general formula (2-1). Or derived from a macromonomer having an ethylarene-unsaturated double bond at a single terminal end of the repeating unit main chain represented by the general formula (IV). The structure is 7C, and the structural unit (4) is The structural unit represented by the formula (3) is an embodiment of the molecular dispersing agent of the present invention, and is exemplified by: a polymer dispersing agent for an inorganic pigment of the copolymer or an inorganic substance containing the dimer; A polymer dispersant for pigments, which is a high-dispensing agent of the present invention Inorganic pigments include a non-aqueous solvent containing the above-described copolymer and a solvent) of the high-molecular dispersant. The

142778.doc The polymer dispersant of the present invention preferably has a dispersibility in the non-aqueous solvent obtained by the inorganic pigment, and it is more preferable to obtain an effect of improving the microdispersibility. Further, the present invention is transmitted in another aspect, and relates to a dispersion method comprising dispersing an alkali-based inorganic pigment in a non-aqueous solvent using the polymer dispersant of the present invention, and the above-mentioned non-aqueous preparation is 丨, f &amp; The solubility parameter of the non-under-bathing agent and the structural list derived from the dispersing agent as a sub-dispersing agent. In the early (c), the dissolved ginseng (Δsp) of the early body is 2.0 (MPa) i/2 or more. The solution is M in the joint and further, the present invention is in other aspects, % is the slurry composition of the present invention, a nonaqueous solvent, an inorganic pigment, and the present invention [Structural unit of the present invention, a polymer component &amp; also, &amp; (1) ΜΛ - Structural unit (1) It is a structure of the following general formula: "The structure is early." The structural unit (a) has a neutralizable acidity: the machine 2 has the following effects: high inhibition by strong adsorption to the test face Molecular dispersant (copolymer) self-testing inorganic [Chemical 4]

[In the above formula (1), Ri or a group having a carbon number of 1 to 2, r2 and R3, which are the same or different, mean that a hydrogen atom Μ represents a hydrogen atom or a cation]. 142778.doc 1374053 The structural unit s(4) may, for example, be a structural unit derived from an acidic monomer having a neutralizable acidic group such as a slow group (hereinafter referred to as an acidic monomer (4)) or may be derived from a post-polymerization addition. And structural units of the acidic group of monomers, and the like. Further, the structural unit (4) is derived from a monomer having an ethylenically unsaturated double bond copolymerizable with a nonionic monomer or a macromonomer (both described below) which forms the structural unit (8). The structural unit structure unit (4) may also be obtained by adding a neutralizable acidic group after polymerization. . . The acidic monomer (4) is an early form represented by the following formula (4), and specific examples thereof include (meth)acrylic acid and crotonic acid, and the basic dispersibility of the organic: organic pigment is improved. From the viewpoint of easiness of introduction of the structure early in the polymer dispersant (4), (meth)acrylic acid··[Chemical 5] c=c [in the above formula (4), R1, R2 and R3 are preferred. The same or different, preferably a hydrogen atom or a calcination group having a rabbit number of 1 to 2, preferably a hydrogen atom or a cation]. In the above formulae (1) and (4), when M is a cation, the cation is not particularly limited, and a monovalent cation is exemplified, and specific examples thereof include a monovalent metal ion such as Ν3 K, and a cation ion or an organic group. Record ions. In the use of electronic materials, since the residual metal ions affect the electrical specifics, it is preferable to record ions and organic ions. In the above formula (4), R1 and R2 which are improved in the microdispersibility of the intrinsic inorganic pigment and I 6778.doc 1374053 in the ease of introducing the structural unit (a) into the polymer dispersant are preferably hydrogen atoms. M is preferably a hydrogen atom. &quot;and tongue', as a method of adding an acid group which can be neutralized after polymerization, for example, a method of converting an unpolarizable acidic group present in a polymer compound, and neutralizing a functional group . In this case, the acidic soil which is not neutralized may, for example, be a vinegar group or an amine group. These non-neutralizable acidic groups can be hydrolyzed, for example, to form a neutralizable acidic group such as a carboxyl group. From the viewpoint of improving the adsorption rate of the inorganic pigment to be inferior to the inorganic pigment, it is a constituent of the polymer dispersant of the present invention. The proportion of the structural unit (4) of the structure is 5 to 45 wt%, preferably 40 to 40% by weight, more preferably 10 to 35% by weight. [Structural unit The structural unit (b) in the high score + dispersant of the present invention is a structural unit represented by the following formula (2-υ, or derived from a repeat represented by the following formula (2 2) The single end of the polymer main chain of the unit has a structural unit of an ethylenically unsaturated and bonded macromonomer. The structural unit (8) is nonionic, and is generally considered to have a strong steric repulsion between the basic inorganic pigment particles. And inhibiting the aggregation of inorganic pigment particles with each other: [Chem. 6] (2-1) R 9=0 x4rL〇]^r8_ [The above formula (4) X, R4, R5 and &quot; identical or different, represents hydrogenogen 142778.doc • 10· 1374053 broad base, r7 represents the carbon number... linear or branched-soil, the surface is not a hydrogen atom or the carbon number is the appearance of the base 2, the sub- or the "child or cation, ηι (4) _ structure In the unit (b), the A w , , and +. elements (hereinafter also referred to as "structure 2 = the structure of the structure represented by the η: .. structure 7^1)"), can be cited from the non-ionic early body (hereinafter also referred to as a structural unit of the nonionic monomer (5))) or a structural unit derived from a monomer into which a nonionic group can be introduced after polymerization. Examples of the nonionic group include a hydrocarbon group such as a polyvinyl group or a polypropylene group. Examples of the nonionic monomer include methoxypolyethylene glycol (meth) acrylate vinegar, methoxy poly (ethylene glycol/propylene glycol) mono (meth) acrylate vinegar, and B. Oxypoly poly(ethylene glycol/propylene glycol) mono(meth)acrylic acid vinegar, polyethylene glycol mono(indenyl) propylene (tetra), polypropylene glycol mono(methyl) acrylate vinegar, 2_methoxyethyl ( Methyl) acrylamide, 2-ethoxyethyl (methyl) propyl sulfonamide, 3-methoxy propyl (meth) acrylamide, and the like. As the nonionic monomer (6), the non-ionic monomer (6) is preferably a nonionic single substance represented by the following general formula (5) from the viewpoint of improving the microdispersibility of the inorganic pigment and the dispersion stability. More preferably, the polyoxyethylene chain has a degree of polymerization of from 1 to 50, and the epoxy group of polyethylene glycol (mercapto) acrylate: [Chem. 7]

142778.doc • 11 · [In the above formula (5), Ώ 5 or carbon number is 炫 及 及 and : is the same or different 'better is the hydrogen original chain of alkane A p8 &quot; A straight chain or a branch having a carbon number of 1 to 4 is a gas... a carbon number of one's or a NH, and (1) is preferably a number of two. In the high IH (5), the microdispersibility of the inorganic pigment is improved, and (4) the powder structure of the single-part V and the (four) are the hydrogen-hydrogen domain points. Stretch propyl, more, ^ 疋 milk atom. Further, in the above formula (5), the basic inorganic pigment is as good as the viewpoint of the easiness of guiding the structural unit (8) in the chemical agent and the high-toner powder for the inorganic pigment. It is the number of (4), and the better is i~4〇, and the better is (4). From the viewpoint of improving the microdispersibility of the intrinsic inorganic pigment, the ratio of the structural unit (6) of all the structural units t constituting the two-molecular dispersant of the present month is 50 to 90%, and the age is pulled from θ. Weight%: A good weight ❶/. The better is 55~8. [Chemical 8] R9 R11

'V &quot;C—一 '0=0 ORl2Jn2 - ff--c-c— RUC=0

OR n3 (2-2) [In the above formula (2·2), R9 and R1. , Rn, R&quot;, Rl4m, the same or different, represents a hydrogen atom or an alkyl group having a carbon number of 丨~2, Ru represents an alkyl group having no carbonic group, and the ruthenium 6 represents an alcohol. The carbon number of the hydroxyl group is 1 to 4, and η; is a positive number and represents the molar fraction of the repeating unit]. 142778.doc -12· [S1 recombination f unit (b) is derived from the single end of the poly 5 main chain containing μ Π &quot; represented by the above formula (2-2) The structural unit of the early body of the saturated double bond (hereinafter also referred to as "structural unit (b_2)") is the structural unit of the source + sub-monomer (hereinafter also referred to as "macromonomer (b2)"). The repeating unit represented by the formula (2-2) contained in the body (b 2) is preferably a random copolymer or a block copolymer of the following formula (6) and the monomer represented: [ 9] J1 H〇(6)

OR 12 c=cr, 4^=〇(7) OR· [In the above formulas (6) and (7), R9, R1〇, Rll'R]3, RliR]u_ or different, preferably a hydrogen atom or a carbon number is The alkyl group of 2, rU is preferably an alkyl group having a carbon number of 丨~4 without an alcoholic group, and preferably an alkyl group having a carbon number of 1 to 4 containing an alcoholic Rory group. Among the above formulas (2-2), (6) and (7), the alkyl group is preferably a linear or branched group. X, from the viewpoint of repeating the above-mentioned formula (22), the Mo group fraction n2 is a positive number, and the microdispersibility and dispersion stability of the inorganic pigment are improved, preferably 4〇 ～95%, more preferably 50 to 90%, and further preferably 5 〇 to 8 〇%, from the viewpoint that the molar fraction is positive, and the microdispersion and dispersion stability of the basic inorganic pigment are improved. In other words, it is preferably 5 to 60%, more preferably 1 to 55%, and further preferably 142,778.doc -13 to 1374053 20 to 50%. 'From the same point of view, the ratio of η3 (n2/n3) is preferably 〇1~4 〇 Mohr fraction n2 and Mohr fraction 7~19, more preferably 丨~9, and thus good Specific examples of the monomer represented by the above formula (4) include (meth)acrylic acid brewing, (meth)acrylic acid ethyl acetate, and (meth)acrylic acid propyl ester (A). Isopropyl acrylate, (fluorenyl) acrylic acid, _, (butyl) (meth) acrylate, and the like. Specific examples of the monomer represented by the above formula (7) include: propylglycolic acid 2-branched, (mercapto)acrylic acid 2 _ propyl vinegar, (meth) acrylic acid 3 _ broiled, (methyl) propyl benzoic acid 4 _ butyl vinegar 'glycerol mono (indenyl) acrylate and the like. As the macromonomer (four), a macromonomer having a (meth) propylene allylic group or a stupid vinyl group at a single terminal is preferred. As a macromonomer (b_2), there is a method in which a (mercapto) alkyl acrylate is subjected to radical copolymerization in the presence of a slow-reacting squeezing, thereby obtaining a polymer having a carboxyl group at a single terminal. An epoxy group-containing unsaturated monomer such as glycidyl (meth)acrylate is subjected to an addition reaction. As another example, there is a method in which a (meth)acrylic acid alkyl ester is subjected to radical copolymerization in the presence of a mercapto group-containing compound, thereby obtaining a polymer having a hydroxyl group at a single terminal, and An esterification reaction is carried out by using an unsaturated monomer having a carboxylic acid group such as methyl)acrylic acid.曰 From the viewpoint of improving the microdispersibility and dispersion stability of the basic inorganic pigment, 5, the weight average molecular weight of the macromonomer (b-2) is preferably 300 Μ, οοο, more preferably 5 〇〇 〜 15, 〇 () (). 142778.doc 14- 1374053 The ratio of the structural unit (b) in all the structural units constituting the polymer dispersing agent of the present invention is 50 to 90 from the viewpoint of improving the microdispersibility and dispersion stability of the basic inorganic pigment. weight. Preferably, it is 55 to 85% by weight, more preferably 55 to 80% by weight. The structural unit (b) of the polymer dispersant of the present invention may be composed of two structural units (b_1} and (b_2), but it is preferable from the viewpoint of improving the micro-knife and dispersion stability of the inorganic pigment. It is composed of any one of the structural units (b·1) and (b_2). [Structural unit (c)] The structural unit (C) of the polymer dispersant of the present invention is represented by the following general formula (3) The structural unit (4) is a thin element which is considered to inhibit the dissolution of the basic inorganic pigment in a non-aqueous solvent: [C10] -C-C-r18x2 χ2ϋ. or -R21 (3) [In the above formula (3), Rl7, R, g 9&gt; are the same or different and represent a hydrogen atom or an alkyl group having a carbon number of 1 to 2, χ3# _ a soil into a non-oxygen atom or NH, rm and r21 having a carbon number of 1 to 30. An alkyl group or a dilute group or an aryl group. As a structural unit (c), it can be water-sliding. μ] is derived from a structural unit represented by the following general formula (8) &amp; aqueous precursor (c): 11] | S ΧΊ &amp; or, 21 (8) 142778.doc , ] 5 - 13740^3 [In the above formula (8), the same or different, preferably a hydrogen atom 2 or a carbon number of 1 to 2] Preferably, χ3 is an oxygen atom or NH, and R2 〇 is preferably a linear, branched or cyclic alkyl or alkenyl group or an aryl group of 丨~". VIII, (8) In the monomer (C), from the viewpoint of the micro-knife of the basic inorganic pigment and the ease of introducing the structural unit (C) into the polymer dispersant, 'RlW8 is preferably a hydrogen atom, R2 Preferred are alkyl or alkenyl groups having a carbon number of from 1 to 22. Specific examples of R2〇 include an anthracenyl group, an ethyl group, a butyl group, an octyl group, a 2-ethylhexyl group, an anthracenyl group, a lauryl group, and a diamyl group. , recording the base of hard base, oil base, camellia base, etc. From the same point of view, 乂 3 is a preferred 疋 oxygen atom, R 2 ! is preferably an alkyl group having a carbon number of 22 or a phenyl group. The hydrophobic monomer of the above formula (8) (specific examples of the oxime include (meth)acrylic acid vinegar, (methyl) acetoacetate, butyl (meth) acrylate, An ester compound such as octyl (meth) acrylate, lauryl (mercapto) acrylate, stearyl (meth) acrylate (behenyl methacrylate), butyl (meth) acrylamide, octyl Amidoxime, decyl-based (meth)acrylamide, stearyl (meth) acrylamide, sulphate (mercapto) acrylamide, guanamine, 1-decene, 1- An α-olefin such as octadecene and styrene, among which, from the viewpoint of dispersion stability, decyl (meth)acrylate, stearyl (meth) acrylate, and styrene are preferable. From the viewpoint of improvement in the microdispersibility of the basic inorganic pigment, the content of the structural unit (C) in all the structures of the single 7C is in the weight ratio with respect to the nonionic structural unit (b) (structural unit (c) / structure The unit (b)) is 〇〇5 to 〇7, preferably 〇1 to 〇6, more preferably 〇ι to 〇5. 142778.doc •16- 1374053 Further, from the viewpoint of suppressing the re-dissolution of the inorganic pigment in the non-aqueous solvent to improve the dispersibility, the solubility parameter of the non-aqueous solvent and the solubility parameter of the hydrophobic monomer (c) The difference (Asp) is preferably 2 〇(10)a or more, more preferably 3._Pa or more. Further, the so-called monomer solubility parameter of the present invention refers to a value calculated by the method of Fed〇rs [r f F coffee s Polym. Eng. Sci., 14, 147 (1974)]. [Preparation of Polymer Dispersant for Inorganic Pigment] The polymer dispersant of the present invention can be made, for example, by a solution polymerization method, comprising an acidic monomer (4), a nonionic monomer (tetra) or a macromonomer (tetra), and a hydrophobic monomer. The monomer component of (4) is obtained by a known method such as polymerization. In the embodiment of the present invention, the ratio (% by weight) of the structural unit (4) in all structural units is preferably regarded as an acidic monomer (4) in all monomer components used for polymerization and/or after polymerization. The ratio (% by weight) of the monomer which can be added to the neutralizable acidic group. Further, the ratio of the structural unit to all the structural units is preferably 'can be regarded as a nonionic monomer (bl) in all the monomer components used for the polymerization and/or can lead to a nonionic group after polymerization. The ratio (% by weight) of the monomer or the (four) (% by weight) of the macromonomer (4) in all the monomer components used for the polymerization. Further, the weight ratio of the structural unit (4) to the structural unit (b) (structural unit (4) / structural unit (b)) is preferably regarded as a hydrophobic monomer in all monomer components used for polymerization (c) The weight ratio of the nonionic monomer or the macromonomer (b-2) to the nonionic monomer after introduction into the nonionic monomer. Therefore, in another aspect of the present invention, the method for producing a polymer dispersant of the present invention, comprising: comprising the acidic monomer (4) in the content of the structural units (4), (8) and (4), respectively, and/or 142,778 after polymerization. Doc 丄374〇53 may add a neutralizable acidic group of monomers, a nonionic monomer (IV) and/or a monomer or macromonomer (b 2) which can lead to an unnatural base after polymerization, and The monomer component of the hydrophobic monomer (C) is polymerized. / Solvent used for solution polymerization ' For example, aromatic smoke (toluene, xylene, etc.), lower alcohol (ethanol, isodiketone, etc.), hydrazine (acetone, alumina _) tetrahydrofuran, one ethylene An organic solvent such as glyceryl ether. The dissolved dose (weight basis) is preferably G5~earthing relative to the total amount of monomers. As the polymerization initiator, a known radical polymerization initiator such as an azo initiator, a hydroperoxide, a peroxy-based peroxy dioxime, peroxidation, or the like can be used. Classes, etc. The starting amount of the polymerization is preferably from G'G1 to 5 mol%, more preferably from 001 to 32 °C, based on the total amount of the monomer components. It is particularly preferable that the O.OW molar %β polymerization reaction is carried out in a temperature range of 6 Torr to 18 ° C under a troublemaker, and the reaction time is preferably 0.5 to 20 hours. Transfer: = A polymeric chain transfer agent can be further added. Specific examples of the polymerization chain transfer illusion include: octyl mercaptan, n-dodecyl mercaptan, tri-decanol, n-tetradecyl mercaptan, mercaptoethanol, 3_zhujishan 2_propylene glycol-- Mercaptans; thiuram disulfide; hydrocarbons; unsaturated ring ^ = Γ saturated material compound (four), material can be used separately. Use more than two types. In the polymer dispersant of the present invention, 'structural unit (4), structure'. The arrangement of the early (C) can be random, block or graft. Further, the official surname 檨S' may contain such a range within a range that satisfies the above content range completely. It is called a structural unit other than 7C. H2778.doc 1374053 From the viewpoint of improving the microdispersibility of the basic inorganic pigment, the weight average molecular weight of the copolymer of the polymer eight powder is preferably 150,000 to 10,000, and the second is 15,000 to U). 'The better is 20,000 to 1 million. Further, the average particle diameter of the basic inorganic pigment (the average particle size based on the bribe specific surface area is less than the small particle diameter of _ nm (for example, 2〇~8〇_ or 3〇~7〇), The viewpoint of the improvement of the microdispersion of inorganic pigments is ancient, ancient eight: The weight average molecular weight of the dispersing agent is preferably more than 1 门: 1 test, more preferably 2_ or more, less than 15000, and then 2000~ 10000. In addition, in the heavy room + the knife is set by GPC (Gel

The value measured by Chromatography, Condensation Oscillator, and detailed measurement conditions are shown in the examples. The polymer dispersant for inorganic pigments produced as described above is excellent in microdispersibility of inorganic pigments in nonaqueous solvents. Therefore, the polymer dispersant of the present invention is preferably used for the dispersion of inorganic pigments, and is better than the dispersion of inorganic inorganic phthalocyanines, and further preferably for the dispersion of alkaline inorganic dermatology in non-aqueous solvents. . [Dispersion Method] Further, another aspect of the present invention can provide a dispersion method comprising the step of using an indispensable inorganic pigment in a non-aqueous solvent using the polymer dispersant of the second invention, and the above-mentioned non-aqueous system The solubility parameter is the (iv) monomer (hydrophobic monomer (4)) 衽 / U from the structural unit (4) of the present invention. In the present invention, the present invention can provide a dispersion method in which the same procedure as the knife dispersant in January is used to disperse the inorganic pigment in the non-aqueous solution 142778.doc, and the package is twisted to 'Dingshi 4 ^ Hungarian The non-aqueous solvent is selected in such a manner that the solubility parameter of the non-aqueous solvent is the same as that of the structural unit rc derived from the molecular dispersing agent of the present invention (hydrophobicity). The difference in the solubility parameter of the monomer (4)) is 2.0 (10) a) & 2 or more, preferably 3 〇 (slightly stricter or more. The above dispersion step includes, for example, an inorganic pigment to be inspected, a molecular dispersant of the present invention, and The non-aqueous solvent is preferably combined with the oxidized particles. The manufacturer can select an appropriate non-aqueous, inorganic polymer and the polymer of the present invention according to the value of the hydrophobic monomer (4). The amount of the dispersing agent can be set in the content range of the final material composition (4). According to the dispersion method of the present invention, the inorganic pigment can be finely dispersed in the non-aqueous solvent, and the slurry described later can be produced. combination.

[Polymer composition J The right side of the polymer dispersing agent of the present invention can be used to obtain a slurry composition in which a basic inorganic pigment is dispersed in a nonaqueous solvent. In the other aspect, the present invention can provide a slurry composition containing a non-aqueous solvent test, a raw inorganic pigment, and a polymer dispersant, and the polymer dispersant is dispersed in the present invention. Agent. According to the slurry composition of the present invention, as described later, 'may|5 (: a fine dispersion of the inorganic pigment is well achieved. The content of the basic inorganic pigment in the slurry composition is determined by the microdispersion. From the point of view of the door, § 'better is 5% by weight to 60% by weight, more preferably 5% by weight, 5% by weight, and further preferably 15% by weight to 40% by weight. The dispersing agent differs from the basic inorganic pigment by 100 parts by weight based on the particle diameter of the inorganic pigment, for example, by using a volume median particle; U(D50) is an inorganic salt of 10 to 5 nm. In the case of a pigment, the phase 142778.doc -20- U74053 is preferably 〇1 to 1 〇 by weight of the basic inorganic pigment. · From the viewpoint of improving the microdispersibility of the organic pigment, the right: Non-testability:: The structure of the polymer dispersant for inorganic pigments; 2 =: Above is better 3.0 (MPa) W2 or more.

More preferably, the slurry composition of 0.2 to 5 + is 1/2. Further, as for the microdispersibility of the dispersion and the slurry: the viscosity of the material, and the sedimentation of the dispersed inorganic pigment: = Pigment: Γ' If the particle size distribution of the inorganic pigment in the bulk material is close to the inorganic cerium-secondary particle size, then (4) the viscosity is lower and the settling time is also changed. According to the invention, the inorganic pigment in the (four) material can be used; : Evaluation by cloth. Specifically, as further described in the examples, the still further aspect of the present invention provides a method for preparing a tanning composition, including a basic inorganic pigment, a dispersing agent, and a non-aqueous solvent. It is a stepping agent which is mixed with the oxidized granules to separate the above-mentioned inorganic pigments. The above dispersing agent is a mixture of the polymer component of the present invention and the amount of the polymer dispersing agent of the present invention. It can be set within the content range of each component in the upper and the aggregate M compound. # According to this manufacturing method, the slurry composition of the present invention can be produced. [Non-aqueous solvent] The non-aqueous solvent which can be used in the present invention is not particularly limited as long as it is a non-aqueous system (organic solvent), but the micro-dispersibility of the basic inorganic pigment is high, and is as described above. From the viewpoint of the compatibility of the polymer dispersant, the solubility parameter is preferably 2 〇 to 3 〇 (MPa) W2, more preferably njMMpa) /2. Specifically, έ ' can be cited as dioxane (18.2) 'ethyl acetate (18 2), oxime (18.3), tetrahydrofuran (18.5), mercaptoethyl _ (193), acetone (197), butyl cellosolve ( 20.2), dimethyl decylamine (24 7), n-propanol (24 9), ethanol (26.2), dimethyl hydrazine (26.4), n-butanol (28 7), methanol (29 7), etc. Organic solvents. The value in () is the solubility parameter. Further, two or more organic solvents may be combined to adjust an appropriate solubility parameter. The solubility parameter of such a mixed solvent can also be determined by experiments. As a simple method, it can also be calculated according to the solubility parameter and the volume fraction of each component of the mixed solvent, and the volume fraction is 5 〇: 50 In the case of toluene and ethanol, the solubility parameter is (18.3) x〇.5 + (26.2) χ〇.5 = 22.3. [Analytic inorganic pigment] Slave and s, on the surface of inorganic pigments have acidic points, alkaline points. The acid in the non-aqueous solvent and the strength of the test can be determined by the reverse titration method to determine whether the inorganic pigment is acidic or inspective. The term "counter-titration method" refers to a method in which an inert reagent (or an acidic reagent) having a known concentration is mixed with an inorganic pigment in advance, and after sufficiently neutralizing, it is separated by a difficult separator or the like, and the supernatant is subjected to separation. For the titration, the amount of acid (or the amount of measurement) is determined based on the amount of the test reagent (or the amount of the acidic reagent). In the present invention, the amount of measurement and the amount of acid are determined by the following methods. 1) Method for determining the amount of measurement Accurately weigh 2 g of inorganic pigment (sample amount) and put it into N acetic acid-A J42778.doc •22· 1374053

In a solution of benzene/ethanol (capacity ratio: 48:52) in 30 mL, the dispersion treatment was carried out for 1 hour with an ultrasonic cleaner (manufactured by Branson Co., model 15i〇j_mT). After standing for 24 hours, one of the inorganic pigment dispersion solutions was subjected to solid-liquid separation using a centrifugal separator (manufactured by Hitachi, Ltd., model cp_56G) at 25,000 rpm for 60 minutes. 1 〇 mL of the separated liquid portion was added to 2 〇 mL of a toluene/ethanol solvent (capacity ratio: 2: 丨) added with a phenolphthalein indicator, and then neutralized and titrated with a 1/100 N potassium hydroxide-ethanol solution. . Let the titration amount of this time be X mL, and the titration required to neutralize 10 mL of 1 /1 〇〇N acetic acid _ benzene / ethanol (capacity ratio 48: 52) is b mL, the sample amount is Sg, hunting The amount of the test is obtained by the following formula.

Method for determining the amount of acid (pmol/g)=3〇x(B-X)/S 2)

Accurately weigh 2 g (sample amount) of inorganic pigment, and add it to 3 〇 mL of &quot; succinylamine _ toluene/ethanol (capacity ratio 48: 52) solution, with ultrasonic cleaner (Branson company, model 151) 〇Jmt) Perform ι hours of dispersion treatment. After standing for 24 hours, the fraction of the inorganic pigment solution was subjected to solid-liquid separation using a centrifugal separator (manufactured by Hitachi, Ltd., model CP 56G) at 25' GGG rpm for 6 G minutes. The separated liquid portion ι〇虹 was added to a toluene/ethanol solvent (capacity ratio of 2:1) 20 to which a fl green indicator was added, and then (10) N hydrochloric acid ethanol solution was subjected to deuteration. Let the titration amount at this time be X mL, and the amount of titration necessary for neutralization of ilan N-n-butylamine-toluene/ethanol (capacity ratio: 48:52) U) is Μ, the sample amount is S g, by The amount of acid was determined by the following formula. Acid amount (pmol/g) = 3〇x(B_x)/§

142778.doc • 23 - the inorganic pigments identified in the month are the inorganic compounds having a value greater than the amount of acid defined above, specifically including oxidized cerium, cerium oxide, cerium oxide, oxidized And other metal oxides, and carbonated, carbonic acid metal carbonate, (four) bismuth, (four) (four), calcium titanate, barium titanate, barium titanate and other composite oxides. The average particle size (average particle diameter based on the specific surface area) of the inorganic pigment which can preferably use the polymer dispersant of the present invention, and the average of the inorganic pigment contained in the slurry composition of the present invention The particle diameter (volume median diameter _)) is preferably 500 (10) or less, more preferably 2 〇〇 (10) or less, and still more preferably 100 nm or less. From the viewpoint of maintaining microdispersibility, it is preferably 5 nm or more, more preferably 7 nm or more, and further preferably 8 nm or more. In other words, the average particle diameter of the above-mentioned inorganic pigment (the average particle diameter of the BET specific surface area and/or the volume median diameter ((10)) is preferably 5 nm or more and 5 μm or less, more preferably a 7 乂. Bu is better than 7 nm and below 200 nm, and then preferably 8 y 耵疋S rnnu, ;! 〇〇 nm or less. Furthermore, alkali, average particle size of pigment (based on average surface area of resistant surface area) Good diameter: 疋 refers to the average particle size of powdered basic inorganic pigments, which can be determined. W-type average particle size of basic inorganic pigments (based on the ratio of ΒΕΤ ratio) &&lt; ten-grain basic inorganic pigments Average particle size (based on the average/diameter of the specific surface area of the ΒΕΤ--) is assumed to be the sphere of the particle size R(m), and the BET specific surface area S (m2/g) and the inorganic fine particles are measured by the nitrogen adsorption method. Determine the specific gravity by the specific gravity, and the surface area per unit weight is §=if) 142778.doc

-24- 1374053 When the surface area is A (m2) and the weight of the particles is W (g), the following relationship can be obtained: S(m2/g)=A(m2)/W(g) = [4x7ix(R) /2)2]/[4/3Mx(R/2)3xpxl06] =6/(Rxpxl〇6) If the unit of particle size is changed, the following formula is obtained: R(nm)=6000/(Sxp)

The average particle diameter (based on the average particle diameter of the specific surface area of bet) was determined. For example, if the BET specific surface area of barium titanate (specific gravity 6.0) is 5 〇 (mVg), the average particle diameter (average particle diameter based on BET specific surface area) is .2 〇〇 nm.

Further, since the polymer dispersant of the present invention is excellent in microdispersibility, it is possible to suppress re-agglomeration of particles, and to approach the average particle diameter of the basic inorganic pigment. That is, the ratio of the average particle diameter of the basic inorganic pigment (based on the average particle diameter of the specific surface area) to the average particle diameter (volume median diameter (D5 〇)) of the (iv) inorganic pigment in the slurry composition of the present invention ( The average particle diameter of the green inorganic pigment/the average inorganic particle diameter of the basic inorganic pigment in the charging composition of the present invention is small, and the preferred one is dip. 9 or less, more preferably dip 8 or less, and further The good is 1~1_7, and the better is 丨~丨5. In, not praise Mingning-^ ^ ^ The degree of sub-generation is defined by the ratio of Qing D5G, the more the ratio (four) the table will not produce The particles are agglomerated. Therefore, in the present specification, the ratio of the micro-dispersibility D_50 can be evaluated as an index. The D90/D50 of the inorganic pigment in the composition of the material is preferably 1 〇~3 疋U j.0 'better. It is 1.0 to 2.1 and further preferably 1.0 to 1.9. In addition, in the wood, jujube, and the book, the so-called volume of 142778.doc -25-1374053 particle size (D5 0), refers to the volume fraction The calculated cumulative volume frequency is calculated from the small particle size to reach a particle size of 50%. Similarly, the volume particle size (D90) refers to the volume fraction. The calculated cumulative volume frequency is calculated from the small particle diameter to reach a particle diameter of 90%. [Examples] Hereinafter, the present invention will be described by way of examples. [Polymer dispersant containing structural unit (b-Ι)] (Implementation) Example 1-1) Polymer dispersant A (SMA/PEGMA9/MAA) was synthesized in a separable flask equipped with a reflux tube, a stirring device, a thermometer, and a nitrogen introduction tube, and stearyl methacrylate (SMA) was added. : Xinzhongcun Chemical Co., Ltd. manufactures NK-Ester S) 2.25 g, decyloxy polyethylene glycol (9) decyl acrylate (PEGMA9: NK-Ester M-90G manufactured by Shin-Nakamura Chemical Co., Ltd., average addition of ethylene oxide The number of ears is 9) 1 0.5 g, thioglycolic acid (MAA: Reagent manufactured by Wako Pure Chemical Industries, Ltd.) 2.25 g, and toluene (reagent manufactured by Wako Pure Chemical Industries, Ltd.) 6.0 g, nitrogen substitution, and heating to 65 ° C After reaching 65 ° C in the tank, 2,2'-azobis(2,4-dimethylvaleronitrile) (V-65B: manufactured by Wako Pure Chemical Industries, Ltd.) was added with 0.45 g and toluene 2_5 g. Mixture. Thereafter, 20.25 g of stearyl methacrylate was added dropwise over 3 hours, and methoxypolyethylene glycol (9) methacryl was added. a mixture of 94.5 g of ester, 20.25 g of methacrylic acid, 90 g of toluene, and 4.05 g of V-65B. After stirring at 65 ° C for 3 hr, it was cooled. Toluene was added to adjust the concentration to obtain polymer dispersant A. The benzene solution has a nonvolatile component of 39.4% by weight and a weight average molecular weight of the polymer dispersant of 142778.doc -26-137453 44200. Further, the nonvolatile components of the polymer dispersant solution were measured in the following manner. Weigh the glass rod and dry anhydrous sodium sulfate 1〇g into the culture solitary, add 2 g of the polymer solution, mix with a glass rod, and dry for 2 hours at 105 ° C vacuum dryer (pressure 8 kPa). . Weighing the weight after drying 'The value obtained by the following formula is used as the non-volatile component: Non-volatile component = {[sample amount - (weight after drying _ (weight of culture alone + weight of glass rod + anhydrous sulfuric acid The weight of sodium))]/sample amount}xl〇〇, the weight average molecular weight of the polymer dispersant is by Gpc (column: manufactured by Tosoh Corporation α-Μ+α-ΜSolvent: 60 mm〇1/ Determined by L Η3ρ〇4, 50 mmol/L LiBr/DMF). Specifically, it is measured in the manner described later (the same applies hereinafter). (Example 1-2) Synthesis of Polymer Dispersant B (SMA/PEGMA23/MAA) The oxirane polyethylene glycol (9) decyl acrylate of the above Example 1-1 (PEGMA9: Xinzhongcun Chemical Co., Ltd.) Manufacture of NK-Ester M-90G) changed to methoxypolyethyl alcohol (23) methacrylate (ρΕ〇ΜΑ23: NK-Ester TM-230G manufactured by Shin-Nakamura Chemical Co., Ltd., the average addition molar number of ethylene oxide is 23) 'In addition to this, a toluene solution in which a dispersant was polymerized was obtained in the same manner. The nonvolatile component of the polymer dispersant solution was 42.1%, and the weight average molecular weight of the polymer dispersant was 684 Å. (Examples 3 to 丨-11 'Comparative Examples 1-1 to 1-3) Polymer dispersants C to N were synthesized in the same manner as in Example M using the materials and the amounts shown in Table 1 below. Examples are 丨_3 to 1-u and Comparative Example 1-1 to Bu3, respectively. The nonvolatile components of each polymer dispersant solution and the weight average molecular weight of 142778.doc -27·1374053 are also described in Table 1 below. In Table 1 below, MAA means methacrylic acid, PEGMA means methoxypolyethylene glycol methacrylate, SMA means stearyl methacrylate, MMA means methyl methacrylate, St means styrene, DMAEMA means Di-decylaminoethyl methacrylate, IPA means isopropanol, AIBN means 2,2·-azobisisobutyronitrile, and MPD means 3-mercapto-1,2-propanediol. (Comparative Example 1-4) A polymer dispersant hydrazine was synthesized by the following method. First, in a separable flask equipped with a reflux tube, a stirring device, a thermometer, and a nitrogen introduction tube, a decyloxy polyethylene monodecyl allyl ether (average molecular weight of 5 50) 110 g, maleic acid was added. 19.6 g of an acid anhydride, 2.4 g of dodecyl mercaptan and 80 g of toluene were replaced with nitrogen and heated to 85 °C. Then, 2,2'-azobisisobutyronitrile (mantidine) 2.0 § was dissolved in toluene 15 § at 85 ° C for 3 hours. After the completion of the dropwise addition, the mixture was stirred for 3 hours and cooled. Toluene was added to adjust the concentration to obtain a toluene solution of the polymer dispersant J. The nonvolatile component of the polymer dispersant solution was 42.5%, and the weight average molecular weight of the polymer dispersant was 11,800. Measurement of Weight Average Molecular Weight The solution was allowed to flow at a flow rate of 1 mL per minute, and the column was stabilized in a 40 ° C high temperature bath. The sample solution was injected therein for 1 〇〇 μΐ and measured. The molecular weight of the sample is calculated based on a calibration curve prepared in advance. When making the calibration curve, the following monodisperse polystyrene was used as the standard sample. Measuring device: HLC-8120GPC (manufactured by Tosoh Corporation) 142778.doc •28- 1374053 Measurement conditions: sample solution 0.5 wt% N,N-dimercaptomethylamine (DMF) solution

'Solution solution: 60 mmol/L H3P〇4, 50 mmol/L LiBr/DMF • Column: α-Μ+α-Μ (manufactured by Tosoh Corporation) Detector: differential refractive index calibration curve: manufactured by Tosoh Corporation 5 ·26χ102, 1.02x 1 05, 8.42x1 06; manufactured by Xiwei Industrial Co., Ltd. 4.〇xl03, 3·〇χ104, 9.0x105 (the numbers are respectively molecular weight) 142778.doc -29- 1374053 Ο ϊ so 〇\ 〇Ο »Λ 00 — S &lt;N ττ ΓΊ· 〇〇〇Ql ζ rn i «Ί »Λ 5 2.25 20.25 in ΓΝ rs I 20.25 〇\ JA rn —〇ΟΟ Os ΙΛ O' 々· 〇»n «Λ I 45.0 S &lt ;N i jj Vi (Ν rs 20.251 12.751 114.751 〇\ ΓΛ —ο ΟΟ 〇\ •rj 〇—ON ϊ jj 0,75| ΙΛ 'ό CN 〇0 74.251 s〇W*i ο «λ &lt;Ν Ο o — ίΝ »η wv 1 i ΓΛ !0.Ι3| 12.751 114.751 113 1013 ο jn m ο jn 〇— Ο *Q 0 1 V\ w*&gt; ίΝ 22.951 S3 34.431 Μ V〇54:68| 2.55 22.95 ο jq ΓΟ ο 对 · 寸 · Ο »Λ· fM — i »ΛΙ Ό f n 32.511 f: 卜·69.391 l 32.8l| d&gt; JA PO ο 〇 — 〇 _ φ φ X 〇 0 5 JQ Ο jn ν〇Μ 2.25 20.25 \〇κη fN Ο ο ΟΝ — p Ο &lt;Ν ν〇so m ο rj- i «η &lt;Ν rs 20.25| »/Ί t 2.25 20.25 \〇ΙΛ fN 々· inch· &lt;J\ 〇〇〇Ο *η U. $ Ϊ Fit V» (Ν &lt;Ν 20.25 ‧ od 74.251 rs \〇»Λ ίΝ &lt;±&gt;&lt;5» σ\ σ' */*» Γ- δ ω Example 丨·5| *Γ) (Ν (Ν 20.25| »n V| σ\ «Λ fN oi i 20.251 ζί\ jq rn ο »〇寸+ ^r § 芬·Q ί &lt;Ν (Ν 20.25| S' 2.25 20.25 Os in r«*i ο ΚΓί ττ Ό·芝's υ rn i *Λ •Λ Ο ν» fN 00 74.251 2.25 20.25 os jn m* ο JQ Ο one &lt;Νι I 43.9 CD (N i Λϋ *Λ ΓΊ &lt;Ν 20.25) »η Ο •η 2.25 20.25 Ν〇&lt;N ο ο 〇\ 〇\ •Λ Ο s rr ΟΟ \£) &lt; i Province VI CN (Ν 20.251 Ο 94.5| 2.25 20.25 v〇m ΓΝ g 1 Ο 々· Ο &lt;Ν m *ω i *〇〇*〇i 5 *〇2 I i *〇3 痊45 ςζ i Initial addition (g) Additive liquid (E) Initial Add (g) Additive solution (fi) 3 'μ I i &quot;〇0 % Initial addition (g) Initial addition (g) Starting 剞 (β) Dropping solution (&) 1 Concentration adjustment (s)' ϊ , % % 45 ^ao i ϊ Μ 1 -3⁄4 νε &quot;μ Ϊ Μ i Μ 屮λ» m times Jll. •Vf (Form υ PEG PEGMA(4) PEGMA(9) PEGMA(23) SMA MMA 55 DMAEMA Right Ί Ί 芰珐 O vr 珀珀 ^ Β- Β - Toluene 1 B 61 1 V-65B 1 AIBN Μ Ten MPD structural unit (8) Structural unit (9) Structural unit (6) Structural unit (control) Solvent polymerization starting

142778.doc • 30-1374053 Microdispersibility Test 1 (Examples 2_1 to 2-15, Comparative Examples 2-1 to 2-4) The polymer dispersants A to 合成 synthesized by using the above examples and comparative examples were used. Barium titanate powder a (Bet specific surface area: 5 m2/g), barium titanate powder b (BET specific surface area: 10 m2/g), and barium titanate powder C (BET ratio) were prepared as an inorganic pigment as follows. A 3% by weight slurry composition having a surface area of 20 m2/g). Preparation method of Rong·material composition

Add 3 6 g of titanium strontium powder, 0 3 g of polymer dispersant (active ingredient) and 15 〇g of cerium oxide particles having a diameter of 1 mm to a container of 25 〇mL to add toluene/ethanol = 48/ The mixed solvent of 52 (volume ratio) was adjusted to have a solid concentration of titanium ruthenium of 3 ^ mixed solvent and a Sp value (calculated value) of 22.4. Then, the container was shaken for 1 hour with a paint shaker (manufactured by Asada Iron Works Co., Ltd.), and pulverized and dispersed to obtain a slurry composition. The particle size of the slurry composition was determined in the following manner and evaluated by D5 〇 (particle size by volume distribution) and D9 〇 (particle size of 9 〇 % by volume distribution). The value of 〇5〇 is close to the average particle diameter of barium titanate, and the smaller the ratio, the smaller the particle size distribution is, indicating that the fine dispersibility is excellent. Particle size measurement The particle size measurement used for the particle size measurement of the inorganic pigment in the polymer composition is a particle size distribution measuring machine manufactured by Sysmex Corporation based on the principle of photon correlation method (dynamic light scattering method). ~ Say the age of ZS. I drops in an amount of 2 mL of a solvent containing an inorganic pigment, a polymer dispersant, and a non-H (tetra) non-aqueous material. 2 mL of the diluted solution was placed in a dish having an optical path length of 1 Gmm, and placed in a measuring section. Further, it is necessary to input the refractive index of the inorganic pigment particles as the measurement parameter 142778.doc •31 · 1374053 The refractive index and viscosity of the dispersion medium (organic solvent). For example, when the inorganic pigment is bismuth citrate, the refractive index of the particles is 2.40. Further, in the case of using A. stupid as a dispersion medium, the refractive index of the dispersion medium is 1.491, and the sample viscosity is 0.550' when using a mixed solvent of toluene/ethanol = 48/52 (volume ratio).丨423, sample viscosity 0.752. As a result of the test, the results of the slurry compositions of Examples 2-^2-15 of Polymer Dispersants A to K and the slurry compositions of Comparative Examples 2_丨~2_4 using Polymer Dispersant L~Ο were not used. In the slurry compositions of Examples 2-1 to 2-15, the polymer dispersants A to K in which the weight ratio of the component (c) to the component (b) is in the range of 〇〇5 to 〇7 are used. The molecular dispersing agent contains a copolymerizable monomer having a sp value of 22.4 and a solubility parameter difference (Δ3ρ) of 2 〇 or more with a mixed solvent of a stupid/ethanol, and a methyl acrylate hard acid S (sp value: 177), As the structural unit (4), any of f-acrylic acid methyl vinegar (sp value of 18.3) and styrene (sp value of 18.9) was used. 142778.doc 32- 1374053 [Table 2] (Table 2) Polymer component weight % (c) / (b) Weight Δsp value (MPa) w Inorganic pigment powder fee 之 之 ϋ ϋ 丨 丨 丨 丨 社 社C) Ratio (8) (b) (Average particle size) D50 (nm) D90 (nm) D90/D50 2-1 A 15 70 Ϊ5 0.21 4.7 274 410 1.50 2-2 B 15 70 15 0.21 4.7 258 389 1.50 2-3 C 30 55 15 0.27 4.7 282 412 1.46 2-4 D 15 70 15 0.21 4.1 275 405 1.47 2-b E 15 70 15 0.21 3.5 Titanium A (200 nm) 272 407 1.50 2-6 F 15 55 30 0.55 4.7 319 663 2.08 Example 2-7 G 15 70 15 0.21 4.7 253 425 1,68 2-8 Η 5 80 15 0.19 4.7 242 390 1.61 2-9 I 24 52 24 0.46 3.5 334 620 1.85 2-10 J 17 66 17 "0,26 4.1 236 378 1.60 2·11 K 7.5 85 7.5 0.09 4.1 263 450 1.71 2-12 B 15 70 15 0.21 4.7 Barium titanate B 182 280 1.54 2-13 E 15 70 15 0,21 3.5 (100 nm ) 184 278 1.51 2-14 B 15 70 15 0.21 4.7 Titanium 睃钡 c 120 295 2.46 2-15 G 15 70 15 0.21 4.7 (50 nm) 98 190 1.94 2-1 L 5 55 40 0.73 4.7 450 1320 2.93 Comparative Example 2-2 M 15 85 0 0.00 - Barium titanate A 347 1020 2.94 2-3 N - 70 1 5 0.21 • 4.7 (200 nm) 1168 2060 1.76 2-4 0 320 1648 5.15 * Calculated according to BET specific surface area, as shown in Table 2 above, 'Synthesis combination of Examples 2-1-2-13 and 2-15 The value of the average D50 is close to the average particle diameter of barium titanate (based on the average particle diameter of the BET specific surface area), and the ratio of 090/050 is also 2.1 or less. Further, the slurry compositions of Examples 2 to 14 and 15 contained barium titanate having an average particle diameter of 50 nm, but Examples 2-15 of the polymer dispersant G having a small weight average molecular weight were excellent in microdispersibility. The microdispersibility of Examples 2 to 14 of the polymer dispersant B having a large weight average molecular weight was used. On the other hand, the polymer dispersant L, ruthenium, and the polymer dispersant 不含 containing no structural unit (a) to (c) are used in which the weight ratio of the component (c)/(b) is 0.05 to 0.7. In Comparative Examples 2-1, 2-2, and 2-4, the value of D50 was close to the average particle diameter of barium titanate, but D90/D50 was relatively large, and was 2.9 or more. Further, the value of D50 in Comparative Example 2-3 containing no component (a) was extremely large as compared with the average particle diameter of titanium 33-142778.doc 1374053. Therefore, the fine dispersion properties of the slurry compositions of Examples 2-1 to 2-15 were superior to those of the slurry compositions of Comparative Examples 2-1 to 2-4. Microdispersibility test 2 (Example 2-1 6) 36 g of barium titanate powder having an average particle diameter of 200 nm, 0.3 g (active ingredient) of polymer dispersant B, and cerium oxide particles of 1 mm in diameter of 150 g - and placed in a 250 mL vessel, toluene was added, and the solid concentration of barium titanate was adjusted to 30% to obtain a slurry composition (Examples 2-16). The polymer dispersant B contained a copolymerizable monomer having a solubility parameter difference (Asp) of toluene solvent sp value of 18.3 and a stearyl methacrylate (sp value of 17.7) as a structural unit (c). The particle size of the slurry composition of Example 2-9 was measured, and the microdispersibility was evaluated according to the ratios of D50, D90, and D90/D50. The results are shown in Table 3 below. [Table 3] (Table 3) Polymer dispersant sp value (MPa) 1/2 Asp value (MPa)] / 2 Particle size measurement result Structural unit (C) Non-aqueous solvent D50 (nm) D90 (nm D90/D50 Example 2-2 B 17.7 22.4 4.7 258 389 1.50 Example 2-16 B 17.7 18.3 0.6 450 2430 5.40 As shown in Table 3 above, the microdispersibility test 1 with a mixed solvent system of toluene/ethanol was carried out. In the case of Example 2-2, the slurry compositions of Examples 2 to 16 using a toluene solvent had a D50, D90, and D90/D50 ratio greater than that of barium titanate, and Example 2 from the viewpoint of microdispersibility. The -2 slurry is better. [Polymer dispersant containing structural unit (b-2)] Synthesis of macromonomers Next, macromonomers were synthesized as described in Production Examples 1 to 5, and prepared 142778.doc • 34·1374053 • Giant monomer Solution. The composition of the resulting macromonomer solution is shown in Table 4 below. (Production Example 1) In a separable flask equipped with a reflux condenser, a thermometer, a nitrogen gas introduction tube, and a stirring device, 34.8 g of decyl methacrylate (MMA) and 2-hydroxyethyl methacrylate (HEMA) were added. 45.2 g, 3-mercaptopropionic acid (MPA) 2.4 g, propylene glycol monomethyl ether acetate (PGMEA) 16 g, and ethanol 16 g, after nitrogen substitution, stirring at 80 ° C for 3 hours • Add a mixture of MMA 139.2 g, HEMA 180.8 g, MPA 9.6 g, PGMEA 64 g, ethanol 64 g, and 2,2'-azobis(2,4-dioxyl valeronitrile) (v_65) 3.2 g liquid. Further, after stirring at 80 ° C for 1 hour, 1.15 g of MPA, 3.2 g of V-65, 60 g of PGMEA, and 60 g of ethanol were added. Further, it is given below: mixing for 2 hours. After cooling to 40 C or less, 6.0 g of tetrabutyl bromide (TBAB), 0.62 g of methoxybenzene, and 21.2 g of glycidyl methacrylate (GMA) were added. The nitrogen introduction tube was changed to an air introduction tube, and the mixture was stirred at 90 ° C for 15 hours while performing air foaming. PGMEA was added to adjust the solids to obtain a poly(MMA/HEMA = 50/50) macromonomer solution having a mercapto fluorenyl group at one end. The weight average molecular weight determined by GPC (solvent: dimercaptocarbamide) was 9480, and the solid content was 60.2%. ' (Production Example 2) • Add MMA 5 1.6 g, HEMA 28.4 g, MPA 2.4 g, toluene 20 g, and ethanol to a separable flask equipped with a reflux condenser, a thermometer, a nitrogen inlet tube, and a mixing device. 20 g, after nitrogen substitution, while stirring at 80 ° C, MMA 2〇64 g, HEMA 113.6 g, MPA 9.6 g, toluene 80 g, ethanol 80 g, and H2778.doc ·35 were added dropwise over 3 hours. · 1374053 V-65 3.2 g mixture. Further, after stirring at 80 ° C for 1 hour, 1.15 g of MPA, 3.2 g of V-65, 80 g of toluene, and 80 g of ethanol were added. Further, the mixture was stirred at 80 ° C for 2 hours. After cooling to 4 (TC or less, TBAB 6.1 g, methoxyphenol 0.63 g, and GMA 21.6 g were added. The nitrogen introduction tube was changed to an air introduction tube, and air-foamed while stirring at 90 ° C for 15 hours. PGMEA was added to adjust the solid matter to obtain a poly(MMA/HEMA=70/30) macromonomer solution having a methacryl oxime group at one end. It was determined by GPC (solvent: dimethyl decyl amide). The weight average molecular weight was 9770, and the solid content was 53.6%. (Production Example 3) In a separable flask equipped with a reflux condenser, a thermometer, a nitrogen gas introduction tube, and a stirring device, 'MMA 5 1.6 g, ΗΕΜΑ 28·4 g was added. MPA 9.6 g, PGMEA 16 g, and ethanol 16 g, after nitrogen substitution, while stirring at 80 ° C, MMA 206.4 g, ΗΕΜΑ 113.6 g, MPA 38·4 g, PGMEA 64 were added dropwise over 3 hours. a mixture of g, ethanol 64 g, and V-65 3.2 g. Further, after stirring at 80 ° C for 1 hour, MPA 1·15 g, V-65 3.2 g, PGMEA 80 g, and ethanol 80 g were added. Stir at 80 ° C for 2 hours. After cooling to below 40 ° C, add 22.4 g of TBAB, 2.3 g of methoxyphenol, and GMA. 79.1 g. The nitrogen gas introduction tube was changed into an air introduction tube, and air-foamed while stirring at 90 ° C for 15 hours. PGMEA was added to adjust the solid matter to obtain a poly(meth) group having a mercapto propylene group at the single end (MMA). /HEMA = 70/3 0) Giant monomer solution. The weight average molecular weight determined by GPC (solvent: dimethylformamide) was 31 70, and the solid content was 67.2%. 142778.doc •36- 1374053 ( Production Example 4) A thermometer, a nitrogen gas introduction tube, and a stirring device can be used in a separate flask.

&amp; 夂QMA 24_4 g. When the nitrogen gas introduction tube was replaced with a reflux condenser and a bubble was prepared, the mixture was stirred at 90 ° C for 15 hours to obtain a thiol propylene air introduction tube at the single end, and air foaming was performed. Ethanol was added to adjust the solids, and the poly(EMA) E monomer solution was selected. The weight average molecular weight determined by Gpc (solvent: dimethylformamide) was 622 Å, and the solid content was 551 Å/〇. (Production Example 5) In a separable flask equipped with a reflux condenser, a thermometer, a nitrogen gas introduction tube, and a stirring device, 64 g of lauryl methacrylate (LMA), HEMA 16 g, MPA 2.4 g, and toluene were added. 2〇g, and 2〇g of ethanol, after nitrogen substitution, while stirring at 80 ° C, lMA 256 g, HEMA 64 g, MPA 9.6 g, toluene 8 〇 g, ethanol 8 滴 were added dropwise over 3 hours. a mixture of g, and V-65 3.2 g. Further, after stirring at 8 ° C for 1 hour, MPA 1·15 g, V-65 3·2 g, toluene 80 g, and ethanol 8 〇 g were added. Further, the mixture was stirred at 80 ° C for 2 hours. After cooling to 4 (rC or less, add TBAB 6" g, methoxy benzene to 0.63 g, and GMA 21.6 g. The nitrogen introduction tube was replaced with an air introduction officer, and air foaming was carried out while being taught at 9 〇t. When mixing 1 5 small 142778.doc -37· 1374053, PGMEA was added to adjust the solid matter to obtain a poly(LMA/HEMA=70/30) macromonomer solution having a mercaptopropenyl group at one end. Solvent: dimethyl decylamine) The weight average molecular weight determined was 9250, and the solid content was 55.4%. [Table 4] (Table 4) Production Example 1 Production Example 2 Production Example 3 Production Example 4 Production Example 5 Repeating unit ( Molar fraction) Methyl methacrylate (MMA) 50% 70% 70% - - Ethyl methacrylate (EMA) - - - 100% - Mercaptoacrylic acid Laurel S (LMA) - - - - 70% 2-Hydroxyethyl methacrylate (HEMA) 50% 30% 30% - 30% Weight average molecular weight of macromonomers 9,480 9,770 3,170 6,220 9,250 Solids % of macromonomers 60.2 53.6 67.2 55.1 55.4 Synthesis of polymer dispersants Next, a polymer dispersant is prepared by using an acidic monomer, a hydrophobic monomer, and a macromonomer synthetic copolymer prepared in the above Production Examples 1 to 5 to prepare a polymer dispersant ( Examples 3-1 to 3-11, Comparative Examples 3-1 to 3-4) (Example 3-1) Synthesis of a copolymer (MAA / Macromonomer of Production Example 1 / SMA) was mounted with a reflux tube In a separable flask of a stirring device, a thermometer, and a nitrogen gas introduction tube, 3.0 g of stearyl methacrylate (SMA: NK-Ester S manufactured by Shin-Nakamura Chemical Co., Ltd.; hydrophobic monomer (c)) was added, and a production example was used. 1 macromonomer solution (macromonomer (b)) 23.28 g, mercaptoacrylic acid (MAA: Wako Pure Chemical Industries, Ltd. reagent; hydrophilic monomer (a)) 3 · 0 g, and ethanol (Wako Pure Chemical Industrial company manufacturing reagent) 8.36 g, nitrogen replacement, heating to 65 ° C. When the tank reaches 65 ° C, add 2,2 ·-azobis (2,4-dioxyl valeronitrile) (V- 65: manufactured by Wako Pure Chemical Industries Co., Ltd.) 0.6 g and ethanol 5.0 g 142778.doc -38- 1374053. After that, it was added dropwise for 3 hours, and the macromonomer solution of 209.48 g, MAA 27.0 g, ethanol 75% g, and v_65 5.4 g mixture. After 3 hours at the price (4), cool. Add (4) to adjust the concentration 'to obtain polymer dispersant solution. Polymer dispersion bath Nonvolatiles in opposite 4〇 ^ 3 wt / square Q dispersant molecules (copolymer) of the weight average molecular weight 67〇〇〇. (Examples 3-2 to 3-1, Comparative Example Guy) The materials and the amounts of addition shown in Table 5 below were used to synthesize Examples 3-2 to 3-10 and Comparative Examples 3] to 3 4 in the same manner as in Example w. The non-volatile 2 points and the weight average molecular weight of the copolymers and the polymer dispersant solutions are also described in the following Table 5. In addition, in Table 5 below, St represents styrene 'MPD' 3_ Supplement of m-propylene glycol, Gusi non-methyl-propyl (four) A 8 (above are all the preparations of Heguang Pure Medicine Weiye Company).

: The non-volatile component of the polymer dispersant solution was measured in the following manner. The glass rod and the dried anhydrous sulfuric acid (4) were weighed and placed in a petri dish, and 2 g of the polymer solution was added thereto, and the mixture was mixed with a glass rod (4) and dried under a (7) generation of a salt pressure of 8 kPa for 2 hours. Weighing the weight after drying, the value obtained by the following formula is used as the non-volatile component: Non-volatile component = {[sample amount _ (weight after drying _ (weight of culture dish + weight of glass rod + anhydrous sulfuric acid The weight of sodium))]/sample amount}x1〇〇, the weight average molecular weight of the southern molecular dispersant (copolymer) is by GPC (column: manufactured by Tosoh Corporation α_Μ+α·ΜSolvent: 6〇_魏测定3Ρ〇4, 50 _ ship UBr/DMF) The measurement conditions of n fine are as follows: 142778.doc -39-1374053 (the same applies to the following Production Example 7.2). Determination of the weight average molecular weight The eluate was flowed at a flow rate of 1 mL per minute, and the column was stabilized in a high temperature bath at 40 °C. The sample solution was injected therein to 100 μΐ and the test was carried out. The molecular weight of the sample is calculated based on a calibration curve prepared in advance. When making the calibration curve, the following monodisperse polystyrene was used as the standard sample. Measuring device: HLC-812〇GPC (manufactured by Tosoh Corporation) Measurement conditions: sample solution 0.5 wt0 / 〇 Ν, Ν-dimethylformamide (DMF) φ solution

Dissociation: 60 mm〇1/L H3p〇4, 5〇mm〇1/L LiBr/D]vlF Column: α-Μ+α-Μ (manufactured by Tosoh Corporation) Detector: differential refractive index · calibration Curve: Tosoh Corporation manufactures 5·26χ1〇2, i 〇2χ1〇5, 8 42χ1〇6; Xiwei Industrial Company manufactures 4〇χ1〇3, 3〇χ1〇4, 9.〇χ1〇5 (the figures are molecular weight respectively) ) Γ C 1 V Λ 142778.doc •40· 1374053

Polymer dispersant (copolymer) Comparative Example 3-4 〇27.0 1 25.42 1 ! 228.76 〇rn 27.0 7.29 5.0 65.62 Ό Ο &lt;〇102,000 44.2 Comparative Example 3-3 〇27.0 25.27 227.44 Ο rn 27.0 7.36 5.0 66.28 Ό Ο 73,000 40.9 Comparative Example 3·2 〇rn 27.0 28.26 1 254.36 5.87 5.0 52.82 ο rt «〇ο S 41.5 Comparative Example 3·丨28.26 1 254.36 s 27.0 5.87 5.0 52.82 VO ο to 69,000 : 43.2 Example 3-10 Ο rS 27.0 23.28 1 209.48 ο rn 27.0 10.72 5.0 96.52 ν〇Ο vs wS 00 ΓΝί 14,000 41.6 Example 3-9 Ο rn 27.0 26.14 235.29 o r&lt;&gt; 1 27.0 1 6.93 5.0 62.35 ν〇Ο in &lt;N 00 ο 9,200 43.4 Example 3-8 Ο ΓΛ 27.0 23.28 i 209.48 〇rn 27.0 8.36 5.0 75.26 Ό 寸 inch (N οο ο 9,500 j 42.2 Example 3-7 Ο rn 27.0 23.28 1 209.48 〇rn 27.0 10.72 5.0 96.52 VO Ο 甘 00 o &lt ;Ν卜' 12,000 40.6 Example 3-6 Ο ro 27.0 23.28 1 209.48 o ro 27.0 8.36 5.0 75.26 ν£&gt; Ο 呀 vi VO o 29,0 00 43.5 Example 3-5 Ο ΓΟ 27.0 29.8 268.91 p ο 〇 \ 5.06 5.0 45.55 ν〇Ο inch ο ο SD 〇 \ 39.8 j Example 3-4 Ο rn 27.0 20.83 187.47 o rn 27.0 9.58 5.0 86.26 VO Ο inch » 〇(N 00 ο Ο Ο νΓ 44.6 Example 3-3 ο rS 27.0 1 20.83 187.47 27.0 9.58 5.0 86.26 Ο »ri 78,000 42.6 j Example 3-2 Ο rn 27.0 26.14 Γ 235.29 〇ro 27.0 6.93 5.0 62.35 νο ο inch 83,000 40.2 j Example 3-1 ο 27.0 23.28 1 209.48 〇27.0 8.36 5.0 75.26 Ο For ντΐ 67,0(8)丨40.3 (Table 5) Initial addition (g) Additive solution (g) Initial addition (g) Additive solution ( g) Initial addition (g) Additive solution (g) Initial addition (g) Additive solution (g) Initial addition (g) Additive solution (g) Initial addition (g) Additive solution (g) Initial addition (g) ) Additive solution (g) Initial addition (g) Additive solution (g) Initial addition (g) Additive solution (g) Initial addition (g) 0〇0〇Starter (g) Additive solution (g) Starting agent (g) dropping liquid (g) 1 weight average molecular weight nonvolatile component Wt% MMA Manufacturing Example 1 Manufacturing Example 2 Manufacturing Example 3 Manufacturing Example 4 Manufacturing Example 5 SMA MM A 00 Ethanol V-65 MPD Acidic monomer (a) Giant monomer (b) Hydrophobic monomer (6) Solvent polymerization initiator chain transfer agent -41 - [s 142778.doc 1374053 [Preparation of slurry composition] The polymer dispersant (copolymer) prepared in the above Examples 3-1 to 3-10 and Comparative Examples 3-1 to 3-4 was prepared as an inorganic pigment of an inorganic pigment (BET specific surface area of 20 m2). /g, a 30% slurry composition based on an average particle diameter of BET specific surface area of 50 nm) (Examples 3-11 to 3-20, Comparative Examples 3-5 to 3 (Examples 3-11, respectively) 36 g of barium titanate powder, 144 g of polymer dispersant of Example 3-1 (solid content (nonvolatile component) of 40.3 wt%) and 150 g of oxidized particle of diameter i mm - and placed in 250 In a mL container, a mixed solvent of toluene/ethanol-48/52 (volume ratio) was added, and the solid concentration of bismuth ruthenate was adjusted to 30%. Then, the container was shaken and dispersed by a paint shaker (manufactured by Asada Iron Works Co., Ltd.) for 1 hour to obtain a slurry composition. (Examples 3-12 to 3-20, Comparative Examples 3-5 to 3-8) In the same manner as the preparation method of the slurry composition of Example 3-11, Examples 3-12 to 3-20 and Comparative Examples were obtained. A slurry composition of 3-5 to 3-8. The obtained slurry composition was subjected to particle diameter measurement under the following conditions, and the obtained microdispersibility was evaluated using the values of D50 and D90 obtained. The results of measurement of the granules of the slurry compositions are shown in Table 6 below. The particle size measurement is used as a particle size distribution measuring machine manufactured by Sysmex Co., Ltd. according to the photon correlation method (Dynamic light (4) method (1) as a measurement method for measuring the particle diameter of the basic inorganic pigment in the slurry composition. Say... Heart ZS. Add in 2 mL of solvent (3) Contains basic inorganic pigment, high score: 142778.doc -42. Dispersant and non-aqueous solvent non-aqueous slurry, dilute. Take the dilution UmL In the glass alloy with an optical path length of 1 mm, the refractive index and viscosity of the inorganic pigment particles as the measurement parameters and the refractive index and viscosity of the solvent are measured. For example, when the inorganic pigment is in the form of acid, the hazelnut is folded (four) 2.40. Further, when toluene is used as the dispersion medium, the refractive index of the dispersion medium is 1,491, and the sample viscosity 〇·550 ' is used in the case of using a mixed solvent of toluene/ethanol = 48/52 (volume ratio), and the refractive index of the dispersion medium is used. (10), sample viscosity of 0.752. Further, the composite composition sheets of Examples 3_1 to 3_10 and Comparative Examples 3·1, 3-3 and 3-4, and the hydrophobic monomer (4) derived from the structural unit (4) of the polymer powder (copolymer) The solubility parameter is methyl (tetra) acid hardness of 17.7) 'methyl methacrylate (sp value of 18 3) and styrene (tetra) value of 1 8.9). Since the solubility parameter (sp value) of the terpene/ethanol mixed solvent as the dispersion medium was 22.4', the solubility parameter difference (Δ邛) of the slurry compositions of the examples and the comparative examples except Comparative Example 3_2 was 2 〇 (MPa). ) W2 or above. Evaluation of Microdispersibility The particle size of the charge composition was determined in the above manner, according to D 5 〇 (in the particle size_to cumulative volume frequency diagram, the cumulative volume frequency from the small particle size side reached 50% of the particle size) And D90 (the fine dispersion property was evaluated on the particle size of the cumulative volume frequency from the small particle size side to a particle size of 90%). The value of D50 is close to the average particle diameter of barium titanate (5 〇 nm), and the smaller the D90/D50 is, the smaller the particle size distribution is, indicating that the fine dispersibility is excellent. 142778.doc •43· 1374053 [Table 6] Slurry composition polymer dispersant component and weight % Δsp value (MPa), /2 slurry particle size measurement result type molecular weight (8) (b) (C) D50 (nm D90 (nm) D90/D50 Example 3-11 Example 3-1 67000 MAA 15 Manufacturing Example 1 70 SMA 15 4.7 105 220 2.10 Example 3-12 Example 3-2 83000 MAA 15 Manufacturing Example 2 70 SMA 15 4.7 100 230 2.30 Example 3-13 Example 3-3 78000 MAA 15 Manufacturing Example 3 70 St 15 3.5 110 280 2.55 Example 3-14 Example 3-4 5400 MAA 15 Manufacturing Example 3 70 SMA 15 4.7 85 155 1.82 Example 3-15 Example 3-5 96000 MAA 15 Manufacturing Example 2 80 SMA 5 4.7 110 235 2.14 Example 3-16 Example 3-6 29000 MAA 15 Manufacturing Example 1 70 SMA 15 4.7 100 205 2.05 Example 3 17 Example 3-7 12000 MAA 15 Manufacturing Example 1 70 SMA 15 4,7 95 180 1.89 Example 3-18 Example 3-8 9500 MAA 15 Manufacturing Example 1 70 SMA 15 4.7 85 150 1.76 Example 3-19 Implementation Example 3-9 9200 MAA 15 Production Example 2 70 SMA 15 4.7 90 175 1.94 Example 3-20 Example 3-10 14000 MAA 15 Manufacturing Example 1 70 MMA 15 4.1 125 360 2.88 Comparative Example 3 -5 Comparative Example 3-1 69000 - Production Example 1 85 SMA 15 4.7 280 1050 3.75 Comparative Example 3-6 Comparative Example 3-2 64000 MAA 15 Manufacturing Example 1 85 - - 240 960 4,00 Comparative Example 3-7 Comparative Example 3-3 73000 MAA 15 Manufacturing Example 5 70 MMA 15 4.1 180 650 3.61 Comparative Example 3-8 Comparative Example 3-4 102000 MAA 15 Manufacturing Example 4 70 SMA 15 4.7 150 480 3.20 As shown in Table 6, Example 3-11 Compared with the slurry compositions of Comparative Examples 3-5 to 3-8, the values of D50 and D90/D50 are smaller, and the micro-dispersion of the basic inorganic pigment barium titanate is smaller. Excellent. Further, the slurry compositions of Examples 3-11 to 3-19 were particularly excellent in microdispersibility. [Industrial Applicability] As described above, the present invention is effective, for example, in the field of using nanoparticle dispersion of an inorganic pigment in a nonaqueous solvent in the production step. -44- 142778.doc

Claims (1)

1374055^一--------- il Bu: Please. Seven, the scope of application for patent r--b patent scope replacement (10) July) A polymer dispersant for inorganic pigments, which is not The aqueous solvent is used and comprises a copolymer comprising: 5 to 45% by weight of structural units in all structural units, and 50 to 90 parts by weight of all structural units. /. The structural unit (b) and the weight ratio relative to the structural unit (8) (structural unit (c) / structural unit (b)) are structural units (c) of 〇.〇5 to 0.7; and structural unit (a) a structural unit represented by the formula (1); a structural unit (b) is a unit represented by the formula (2-1) - or derived from a formula (2·2) a structural unit (b-2) of a macromonomer having a weight average molecular weight of 300 to 30000 having an ethylenically unsaturated double bond at a single terminal of the repeating unit of the repeating unit; and a structural unit (c) ) the structural unit represented; [Chemical 1] V弋(1), R1, R and R3 are the same or different and represent a hydrogen atom or an alkyl group having a carbon number of 1 to 2, and M represents a hydrogen atom or a cation]; [Chemical 2] (M) 142778-1 Ol〇702doc [The above formula (2-1) _ ' R4 ' r5 and R6 are the same or different and each represents a hydrogen atom or an alkyl group having a carbon number of 1 to 2, and R7 represents a linear or branched chain having a carbon number of 2 or 3. R8, R8 represents a hydrogen atom or an alkyl group having a carbon number of 1 to 2 'X1 represents an oxygen atom or NH 'η丨 represents a number from 1 to 50; in the above formula (2·2), 'R9, Ri〇, rii, , r丨4 and r丨5 are the same or different 'representing a hydrogen atom or an alkyl group having a carbon number of 1 to 2, and Ri2 represents an alkyl group having an alcoholic radical having a carbon number of 1 to 4, and R16 is an alcohol. The carbon number of the hydroxyl group is 1 to 4, and n2 and n3 are positive numbers and the ratio of the molar fraction of the repeating unit '~ and ~ (n2/n3) is 0.7 to 19]; [Chemical 3] ό ό-L r1bxs I 〇 = 〇 or -R21(8) X^-R20 [In the above formula (3), R17, 尺 18 and R] 9 are the same or different and represent a hydrogen atom or an alkyl group having a carbon number of 1 to 2' X3 represents an oxygen atom or nh, and r2〇 and R21 represent an alkyl group or an alkenyl group or an aryl group having a carbon number of 1 to 30]. 2. The polymer dispersant for inorganic pigments according to claim 1, wherein the copolymer has a weight average molecular weight of 15,000 to 100,000. 3. The polymer dispersant for inorganic pigments according to claim 1, wherein the copolymer has a weight I average molecular weight of 2,000 or more and less than 15,000. 142778-1010702.doc 4. Machine = = which includes the use of any of the requirements of items 1 to 3 = no dispersant to make the inorganic pigment in the non-aqueous solvent and the solubility parameter of the above non-aqueous solvent and the above inorganic ^ The difference in solubility parameter (Asp) of the monomer derived from the structural unit (4) of the molecular dispersant is 2 〇 (MPa), /2 or more. A polymer material composition comprising a non-aqueous solvent, an inorganic pigment, and a polymer dispersant for an inorganic pigment according to any one of Items 1 to 3. 6. The slurry composition of claim 5, wherein the basic inorganic pigment is selected from the group consisting of magnesium oxide, barium carbonate, titanium oxide, calcium titanate, barium titanate, barium zirconate, and calcium silicate. a metal oxide or a composite oxide. 142778-1010702.doc